knout and herman a



(No ModeL) J. P. KNOUT 81: H. A. COOK.

MUSIC LEAF TURNER.

No. 587,742. Patented Aug. 10,1897.

UNITED STATES JOHN P. KNOUT AND HERMAN A. COOK, OF DOLGEVILLE, NEIV YORK' PATENT OFFICE.

SAID COOK ASSIGNOR TO CHARLES DOLGE, OF SAME PLACE.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 587,742, dated August 10, 1897.

Application filed June 18, 1897- Serial No. 641,338. (No model.)

To all whom it may concern.-

Be it known that we, JOHN P. KNO'U'r and HERMAN A. COOK, citizens of the United States, residing atDolgeville, in the county of IIerkimer and State of New York, have invented certain new and useful Improvements in Music-Leaf Turners; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements in music-leaf tumors; and it has for its object the provision of a simple and cheaply-constructed device of this character which will be of few parts, so arranged as to render the device-at all times uniform and positive in action, the turning of the leaves being effected by the depression of a handle or key which is placed directly in front of and within convenient access of the operator, thus permitting the leaves of the music to be turned readily without the delay which is necessarily incident to the turning of the leaves by hand.

A further object of the invention is to simplify and cheapen the construction and to render more efficient in operation this class of devices.

To these ends and to such others as the invention may pertain the same consists in' the peculiar construction and in the novel combination, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the accompanying drawings, and then specifically defined in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the let- Reference now being had to the details of the drawings by letter, A designates the music-leaf turner embodying our invention, the same consisting, essentially,of two parallel telescoping side pieces B B, which are parallel and form the sides of the holder-frame. At their lower ends these side pieces B are attached securely to a metallic base plate or strip C, which forms the lower end of the frame. At a point adjacent to the upper end of the frame the side parts are connected by a cross-strip D, and at the longitudinal center of this cross-stri p D is provided a spring-clip (Z, adapted to engage the book or m usic-leaves at their upper end, which the lower ends are secured in place by a like spring-clip 0 upon the base-piece C.

Sleeved upon a stub-shaft E which rises from the upper edge of the cross-strip D of the frame are a series of arms or levers F, F F, F", and Each of these levers is pro vided with I a spiral actuating-spring f, the tension of which springs serve to normally hold the levers folded back against the face of the frame to the right of its center, and the free end of each lever is provided with a depending wire or strip G, adapted to pass behind the leaf of the music-sheet which it is designed to turn.

Each of the levers F, F &c., is provided at its inner end with an arm or extension I), which extends for a short distance beyond the point at which the lever is sleeved upon the stub-shaft E, and II is a vertically-movable wire or rod which when moved upward will engage the rear edges of the said extensions Z) of the levers, and thus serve to lock the levers in position against the tension of the springs f.

The wire or rod II passes loosely through openings provided for the purpose in the ears h, which extend horizontally rearward from the upper and lower edges of the cross-piece D of the frame, and at a point intermediate of the said ears 7L the said wire II is provided with an arm 7L2, which extends at right angles to the length of the wire II, the said arm hav ing its free end beveled to engage the notches of a vertically-movable rack-bar I, as shown. T is rack bar or rod I extends vertically across the rear of the frame and is loosely sleeved within keepers I and I The said rod I is at its lower end bent or curved for ward and is provided at the end of this forward extension with a suitable disk or button 1 by means of which it may be depressed by the operator. The upper portion of the rod I is provided with a series of notches upon the side adjacent to the movable-wire or rod H, and the arm 77, is held normally in engagement with one of the notches by a spring J, which spring has one of its ends attached to the cross-piece D and has its free end bearing against the rod I. The rod I is normally held at the extreme limit of its upward throw by the tension of a coiled spring K, connecting the lower end of the rod with the base-plate C.

From the foregoing description of the construction of the device the operation will be readily understood. The depending arms or wires G are placed between the pages of n1u sic at the upper ends of the leaves of the book, which is held by the spring-clips (I (Z, and the arms are turned to the left. The wire II is then raised into engagement with the rear edges of the extensions 1) of the levers, which are thus held in place against the tension of the springs f. hen it is desired to turn the first leaf, it is simply necessary for the operator to depress the operating button or disk 1 thus drawing the rod I downward. This downward movement of the rod I will, by reason of the engagement of the arm 72, upon the rod II, serve to draw the rod II downward a suificient distance to free the upper end of the rod II from engagement with the extension Z) of the upper lever F, and the said lever is thrown to the left, carrying with it the first page or leaf to be turned, as will be readily understood. Upon releasing pressure upon the key I the rod I is forced again upward by the spring K, and the arm 702 is thrown into engagement with a notch upon the rod I, from which it is disengaged by the next downward pressure upon the operating-key.

Having thus described our invention, what we claim to be new, and desire to secure by Letters Patent, is-

1. In a music-leaf turner, the combination with the leaf-turning levers each provided with an actuating-spring, a vertically-movable stop rod or wire for holding the lovers in position against the tension of the springs, the vertically-movable notched rod I, the spring for normally holding said rod at the extreme limit of its upward throw, and an arm h carried by the rod II and adapted to engage the notches upon the rod I, substantially as described and for the purpose specified.

2. The combination with the main frame provided with spring-clips for holding the music-sheets, the spring-actuated leaf-turning arms carrying at their free ends wires to engage the leaves to be turned and at their opposite ends provided with extensions proj ecting beyond the pivotal points of the arms,

the vertically-movable wire or rod II adapted to engage the said extensions of the levers, the vertical]y-movable notched rod I, springactuated as described and carrying at its lower end an operating-key, of an arm 71/ 081.- ried by the rod II and adapted to engage the notches upon the rod I, substantially as described.

In testimony whereof we aflix our signatures in presence of two witnesses.

JOHN P. KNOUT. HERMAN A. COOK. \Vitnesses:

IIELOM BRUNK AUT, FRANK FAVILLE. 

